// VERSION: 2.2 LAST UPDATE: 13.03.2012
/*
 * Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
 *
 * Made by Wilq32, wilq32@gmail.com, Wroclaw, Poland, 01.2009
 * Website: http://code.google.com/p/jqueryrotate/
 */
// Documentation removed from script file (was kinda useless and outdated)
(function($) {
	var supportedCSS, styles = document.getElementsByTagName("head")[0].style, 
	toCheck = "transformProperty WebkitTransform OTransform msTransform MozTransform".split(" ");
	for (var a = 0; a < toCheck.length; a++)
		if (styles[toCheck[a]] !== undefined)
			supportedCSS = toCheck[a];
	// Bad eval to preven google closure to remove it from code o_O
	// After compresion replace it back to var IE = 'v' == '\v'
	var IE = eval('"v"=="\v"');
jQuery.fn.extend({
		rotate : function(parameters) {
			if (this.length === 0 || typeof parameters == "undefined")
				return;
			if (typeof parameters == "number")
				parameters = {
					angle : parameters
				};
			var returned = [];
			for (var i = 0, i0 = this.length; i < i0; i++) {
				var element = this.get(i);
				if (!element.Wilq32 || !element.Wilq32.PhotoEffect) {
					var paramClone = $.extend(true, {}, parameters);
					var newRotObject = new Wilq32.PhotoEffect(element,
							paramClone)._rootObj;
					returned.push($(newRotObject));
				} else {
					element.Wilq32.PhotoEffect._handleRotation(parameters);
				}
			}
			return returned;
		},
		getRotateAngle : function() {
			var ret = [];
			for (var i = 0, i0 = this.length; i < i0; i++) {
				var element = this.get(i);
				if (element.Wilq32 && element.Wilq32.PhotoEffect) {
					ret[i] = element.Wilq32.PhotoEffect._angle;
				}
			}
			return ret;
		},
		stopRotate : function() {
			for (var i = 0, i0 = this.length; i < i0; i++) {
				var element = this.get(i);
				if (element.Wilq32 && element.Wilq32.PhotoEffect) {
					clearTimeout(element.Wilq32.PhotoEffect._timer);
				}
			}
		}
	});
	// Library agnostic interface
	Wilq32 = window.Wilq32 || {};
	Wilq32.PhotoEffect = (function() {
		if (supportedCSS) {
			return function(img, parameters) {
				img.Wilq32 = {
					PhotoEffect : this
				};
				this._img = this._rootObj = this._eventObj = img;
				this._handleRotation(parameters);
			}
		} else {
			return function(img, parameters) {
				// Make sure that class and id are also copied - just in case
				// you would like to refeer to an newly created object
				this._img = img;
				this._rootObj = document.createElement('span');
				this._rootObj.style.display = "inline-block";
				this._rootObj.Wilq32 = {
					PhotoEffect : this
				};
				img.parentNode.insertBefore(this._rootObj, img);
				if (img.complete) {
					this._Loader(parameters);
				} else {
					var self = this;
					// TODO: Remove jQuery dependency
					jQuery(this._img).bind("load", function() {
						self._Loader(parameters);
					});
}
}
}
})();
Wilq32.PhotoEffect.prototype={
		_setupParameters : function(parameters) {
			this._parameters = this._parameters || {};
			if (typeof this._angle !== "number")
				this._angle = 0;
			if (typeof parameters.angle === "number")
				this._angle = parameters.angle;
			this._parameters.animateTo = (typeof parameters.animateTo === "number") ? (parameters.animateTo)
					: (this._angle);
			this._parameters.step = parameters.step || this._parameters.step
					|| null;
			this._parameters.easing = parameters.easing
					|| this._parameters.easing || function(x, t, b, c, d) {
						return -c * ((t = t / d - 1) * t * t * t - 1) + b;
					}
			this._parameters.duration = parameters.duration
					|| this._parameters.duration || 1000;
			this._parameters.callback = parameters.callback
					|| this._parameters.callback || function() {
					};
			if (parameters.bind && parameters.bind != this._parameters.bind)
				this._BindEvents(parameters.bind);
		},
		_handleRotation : function(parameters) {
			this._setupParameters(parameters);
			if (this._angle == this._parameters.animateTo) {
				this._rotate(this._angle);
			} else {
				this._animateStart();
			}
		},
		_BindEvents : function(events) {
			if (events && this._eventObj) {
				// Unbinding previous Events
				if (this._parameters.bind) {
					var oldEvents = this._parameters.bind;
					for ( var a in oldEvents)
						if (oldEvents.hasOwnProperty(a))
							// TODO: Remove jQuery dependency
							jQuery(this._eventObj).unbind(a, oldEvents[a]);
				}
				this._parameters.bind = events;
				for ( var a in events)
					if (events.hasOwnProperty(a))
						// TODO: Remove jQuery dependency
						jQuery(this._eventObj).bind(a, events[a]);
			}
		},
		_Loader : (function() {
			if (IE)
				return function(parameters) {
					var width = this._img.width;
					var height = this._img.height;
					this._img.parentNode.removeChild(this._img);
					this._vimage = this.createVMLNode('image');
					this._vimage.src = this._img.src;
					this._vimage.style.height = height + "px";
					this._vimage.style.width = width + "px";
					this._vimage.style.position = "absolute"; // FIXES IE
																// PROBLEM - its
																// only rendered
																// if its on
																// absolute
																// position!
					this._vimage.style.top = "0px";
					this._vimage.style.left = "0px";
					/*
					 * Group minifying a small 1px precision problem when
					 * rotating object
					 */
					this._container = this.createVMLNode('group');
					this._container.style.width = width;
					this._container.style.height = height;
					this._container.style.position = "absolute";
					this._container.setAttribute('coordsize', width - 1 + ','
							+ (height - 1)); // This -1, -1 trying to fix
												// ugly problem with small
												// displacement on IE
					this._container.appendChild(this._vimage);
					this._rootObj.appendChild(this._container);
					this._rootObj.style.position = "relative"; // FIXES IE
																// PROBLEM
					this._rootObj.style.width = width + "px";
					this._rootObj.style.height = height + "px";
					this._rootObj.setAttribute('id', this._img
							.getAttribute('id'));
					this._rootObj.className = this._img.className;
					this._eventObj = this._rootObj;
					this._handleRotation(parameters);
				}
			else
				return function(parameters) {
					this._rootObj.setAttribute('id', this._img
							.getAttribute('id'));
					this._rootObj.className = this._img.className;
					this._width = this._img.width;
					this._height = this._img.height;
					this._widthHalf = this._width / 2; // used for optimisation
					this._heightHalf = this._height / 2;// used for optimisation
					var _widthMax = Math.sqrt((this._height) * (this._height)
							+ (this._width) * (this._width));
					this._widthAdd = _widthMax - this._width;
					this._heightAdd = _widthMax - this._height; // widthMax
																// because
																// maxWidth=maxHeight
					this._widthAddHalf = this._widthAdd / 2; // used for
																// optimisation
					this._heightAddHalf = this._heightAdd / 2;// used for
																// optimisation
					this._img.parentNode.removeChild(this._img);
					this._aspectW = ((parseInt(this._img.style.width, 10)) || this._width)
							/ this._img.width;
					this._aspectH = ((parseInt(this._img.style.height, 10)) || this._height)
							/ this._img.height;
					this._canvas = document.createElement('canvas');
					this._canvas.setAttribute('width', this._width);
					this._canvas.style.position = "relative";
					this._canvas.style.left = -this._widthAddHalf + "px";
					this._canvas.style.top = -this._heightAddHalf + "px";
					this._canvas.Wilq32 = this._rootObj.Wilq32;
					this._rootObj.appendChild(this._canvas);
					this._rootObj.style.width = this._width + "px";
					this._rootObj.style.height = this._height + "px";
					this._eventObj = this._canvas;
					this._cnv = this._canvas.getContext('2d');
					this._handleRotation(parameters);
				}
		})(),
		_animateStart : function() {
			if (this._timer) {
				clearTimeout(this._timer);
			}
			this._animateStartTime = +new Date;
			this._animateStartAngle = this._angle;
			this._animate();
		},
		_animate : function() {
			var actualTime = +new Date;
			var checkEnd = actualTime - this._animateStartTime > this._parameters.duration;
			// TODO: Bug for animatedGif for static rotation ? (to test)
			if (checkEnd && !this._parameters.animatedGif) {
				clearTimeout(this._timer);
			} else {
				if (this._canvas || this._vimage || this._img) {
					var angle = this._parameters.easing(0, actualTime
							- this._animateStartTime, this._animateStartAngle,
							this._parameters.animateTo
									- this._animateStartAngle,
							this._parameters.duration);
					this._rotate((~~(angle * 10)) / 10);
				}
				if (this._parameters.step) {
					this._parameters.step(this._angle);
				}
				var self = this;
				this._timer = setTimeout(function() {
					self._animate.call(self);
				}, 10);
			}
			// To fix Bug that prevents using recursive function in callback I
			// moved this function to back
			if (this._parameters.callback && checkEnd) {
				this._angle = this._parameters.animateTo;
				this._rotate(this._angle);
				this._parameters.callback.call(this._rootObj);
			}
		},
		_rotate : (function() {
			var rad = Math.PI / 180;
			if (IE)
				return function(angle) {
					this._angle = angle;
					this._container.style.rotation = (angle % 360) + "deg";
				}
			else if (supportedCSS)
				return function(angle) {
					this._angle = angle;
					this._img.style[supportedCSS] = "rotate(" + (angle % 360)
							+ "deg)";
				}
			else
				return function(angle) {
					this._angle = angle;
					angle = (angle % 360) * rad;
					// clear canvas
					this._canvas.width = this._width + this._widthAdd;
					this._canvas.height = this._height + this._heightAdd;
					// REMEMBER: all drawings are read from backwards.. so first function is translate, then rotate, then translate, translate..
					this._cnv
							.translate(this._widthAddHalf, this._heightAddHalf); // at least center image on screen
					this._cnv.translate(this._widthHalf, this._heightHalf); // we move image back to its orginal
					this._cnv.rotate(angle); // rotate image
					this._cnv.translate(-this._widthHalf, -this._heightHalf); // move image to its center, so we can rotate around its center
					this._cnv.scale(this._aspectW, this._aspectH); // SCALE - if needed ;)
					this._cnv.drawImage(this._img, 0, 0); // First - we draw image
				}
		})()
	}
	if (IE) {
		Wilq32.PhotoEffect.prototype.createVMLNode = (function() {
			document.createStyleSheet().addRule(".rvml",
					"behavior:url(#default#VML)");
			try {
				!document.namespaces.rvml
						&& document.namespaces.add("rvml",
								"urn:schemas-microsoft-com:vml");
				return function(tagName) {
					return document.createElement('<rvml:' + tagName
							+ ' class="rvml">');
				};
			} catch (e) {
				return function(tagName) {
					return document
							.createElement('<'
									+ tagName
									+ ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
				};
			}
		})();
	}
})(jQuery);